Slitting means



Nov. 27, 1928. 1,692,815

J. A. CAMERON SLTTING MEANS Filed Sept. 21, 1927 5 Sheets-Sheet l ATTORNE Y NV NTOR jm w m. um Q Nov. 27, 1928.

J. A. CAMERON SLITTING MEANS Fild sept. 21, 1927 :5 sheets-sheet 2INVENTOR @da WWW 1 ATTORNEY Nov. 27, 1928. J. A. CAMERON SLITTING MEANSFiled sept. 21, 192'? 5 Sheets-sheet 5 IN VENT OR m ATTORNEY PatentedNov. 271928.

1,692,816 PATENT orales.

UNITED STATES JAMES A... CAMERON, 0F BROOKLYN, NEW YORK, ASSIGNOR TOCAMERON MACHINE COMPANY, OF BROOKLYN, NEW 'YORK, A CORPORATION OF NEWYORK.

SLITTING' Application led September 2 1, 1927. Serial No. 220 870.

This invention relates to slitting means and particularly of the typeknown as overlapping.

shear-cut slitting means, and has for its main obJect and featuremaintaining the shears in overlapping relation notwithstanding whipping7of the shaft or shafts carrying the slitting elements.

In the accompanying drawings the invention is disclosed in severalconcrete and preferred forms iin which Fig. 1 is a View, partly inelevation and partly in section, of a slitting device embodyinv one formof the invention.

4 igs. 2, 3 and. 4 are views similar to lFig. 1 embodying modified formsof the invention.

Fig.7 5 is a transverse :sectional view particularly of Fig. 4.- but maybe considered as illustrating a transverse section of any of ltheconstructions shown in Figs. 1 to 4 inelusive.

Fig. 6 is a detail sectional view of a flexible coupling means that maybe employed in connection with the invention.

Fig. 7 is a View similar to Figs. 1 to 4 inclusive but showing a stillfurther modified form of the invention. Fig. 8 is a detail sectionalview substantially on the plane of line 8-8of Fig. 7.

Fig. 9 is a detail sectional view substantially in the plane of line9--9 of Fig. 7.

1 and 2 indicate two shear-cut members in overlapping relation saidmembers consisting of a set of overlapping shears of a well-known type,and in machines of this type it is custom'- ary to provide a pluralityof such sets of shears t0 slit a web of fiexible material lengthwise.One of the members, as 1, of each set of shears is usually mounted on adriven shaft, the other shear members, as 2, being usually held inspring-pressed relation sidewise againstk members 1 and frictionallydriven thereby.

Webs of paper are now being made in very wide widths and as aconsequence the shaftwhich supports members 1 must be of relativelygreat length. I find that it is diflicult to obtain dynamic balance ofsaid shaft and that therefore-such shaft has a whipping action, that isto say: it tends to flex and does not run true. The result is that theshear-cut members of the different sets at times become disengaged outof their overlapping relation and, when they attempt to return intoengagement, one member will frequently ride on top of another instead ofbeing in overlapping relation. This will destroy the cutting edge of amember, as 2, and will also tend to cut the paper unevenly.

To overcome this difficulty I provide a sectionalized shaft for member 1and provide a coupling means between the shaft sections that will allowa certain amount of misalinement of said sections without permitting themembers of the set of shears to move out of overlapped relation. l

In accordance with this, 3a and 3b indicate two shaft sections arrangedand sustained` end to end. In the case shown in Fig. 1 such shaftsections, which constitute a set, are supported by end bearings 4 and acenter bearing 5. These shaft sections are connected by flexiblecoupling means, as 6, which latter is preferably a coupling knowncommercial] as Kanti-lever coupling, and disclosed in at- @nts Nos.1,326,366 1,455,425 and. 1,574,466. Power maybe applied to the shaftsections by means of a` pulley 7, or otherwise, and coupling 6 serves totransmit the power from one shaft .section to another withouttransferring the Whi ping tendency. In order to adapt the mac ine to cutweb sections of different widths the shear cut'memloersl are adjustablein a manner well understood and center bearing 5vis slidably mounted ona bracket as 8, the adjustment of bearing 5 being effected by means ofhandwheel 9, gears 10 and 11 and threaded stem 12. The shaft sectionsand coupling means can therefore be adjusted lengthwise in unison.

It will now be understood that the fiexible coupling means transmitspowerA from one shaft section to the other and while tending to opposethe whipping action of the shaft sections, nevertheless allows a certainamount of misalinement thereof without, however, permitting the othermembers of -a set to become disenga ed. In consequence of this themachine may e run at a very hi h speed and may be used in connection witvery wide webs. f

In Fig. 2 there are three shaft sections, 3*, 3b and 3, two flexiblecouplings 6 and 6"I and two center bearings 5 and 5. y

In Fig. 3 there are two shaft sections 3 and 3b, two center bearings5`and 5a and one flexible coupling 6. '1

In Fig. 4 the arrangement is the same as in Fig. 1, but here centerbearing 5 is not adjustabl In certain types of machines of thischaracter both members of the shear-cut slitters are mounted on drivenshafts and the invention canlikewise be applied to this type of machine.In the exempliication shown in Figs. 7, 8 and 9 there are t-wo sets of'shaft sections, one 30a, 30 and the other 30()a and 300". As there'shown the sections of the same set are connected by flexible couplingmeans 6 and a plurality of sets of shear cut slitting members 1 and 2are employed in overlapping relation. In this form of the invention thetwo sets of shaftsections may be intergcared as by means of gears 70 and700, power being derived, as before, from a pulley 7. One geared set ofshaft sections may also be adjustable toward and away from the other andit will be noted that endand center bearings 4 and 5 are connectedtogether by beam 15 and that bearingsl are adjustllile in guides 16 bymeans of screws 17.

` center bearings 5 of both sets of shaft sections are adjustablelengthwise, one on beam 15 by means of bolts 16 and the other on rod 17by means of bolt 18.

I claim:

1. The combination with slitting means consisting of a plurality of setsof overlapping shears, of a plurality of shaft sections arranged andsustained end to end to support one of the members of each set ofshears,

disengagement of the mem.

bers of the sets of shears from overlapping relation.

2. The lcombination with slitting means consisting ot a plurality ofsets of overlapping shears, of a plurality of shaft sections arrangedand sustained endto end to support one of the members of each set ofshears, ieXible coupling means between the shaft sections to admit ofmisalinement of said sections but not of disengagement. of the members.of the sets of shears from overlapping relation, and means to adjust theshaft sections and coupling means lengthwise in unison.

- 3. The combination with slitting means consisting of a plurality ofsets of overlapping shears, of two sets of shaft sections, each set ofsections arranged and sustained end to end to support one of the membersof each set of shears. and flexible coupling means between the shaft'sections of each set to admit to misalinementof the sections of eachvset but not of disengagement. of the members of the sets of shears fromoverlapping relation. Signed at the borough of Brooklyn, in the countyof Kings. city and State of New York. this 14th, day of Sept., 1927.

` JAMES A. CAMERON.

